\newcommand{\mbf}[1]{\mbox{\boldmath$#1$}}
\font\mbff=cmbsy10\def\mbfx#1{\hbox{\mbff#1}}%\let\mbf\Mbff
\newcommand{\del}[2]{\mbox{$\displaystyle\frac{#1}{#2}$}}
\newcommand{\pard}[2]{\del{\partial \,{#1}}{\partial \,{#2}}}
\newcommand{\ppd}[2]{\del{\partial \,{#1}}{\partial \,{#2}}}
\newcommand{\dpd}[2]{\del{\partial ^{2}\,{#1}}{\partial \,{#2}^{2}}}
\newcommand{\tpd}[2]{\del{\partial ^{3}\,{#1}}{\partial \,{#2}^{3}}}
\newcommand{\cpd}[2]{\del{\partial ^{4}\,{#1}}{\partial \,{#2}^{4}}}
%\newcommand{\spd}[1]{\del{\partial ^{3}\,{#1}}{\partial \,x\,\partial \,t^{2}}}
%\newcommand{\scpd}[1]{\del{\partial ^{4}\,{#1}}{\partial \,x^{2}\,\partial
%\,t^{2}}}
\newcommand{\der}[2]{\del{d \,{#1}}{d \,{#2}}}
\newcommand{\dd}[2]{\del{d ^2\,{#1}}{d \,{#2}^2}}
\newcommand{\td}[2]{\del{d ^3\,{#1}}{d \,{#2}^3}}
\newcommand{\cd}[2]{\del{d ^4\,{#1}}{d \,{#2}^4}}
\newcommand{\MKP}{{MKP$\;\;$}}
\newcommand{\inl}[2]{\mbox{$\displaystyle\int_{#1}^{#2}$}}
\newcommand{\sul}[2]{\mbox{$\displaystyle\sum_{#1}^{#2}\,$}}
\newcommand{\limit}[1]{\mbox{$\displaystyle\lim_{#1}$}}
\newcommand{\vp}{\varphi}
\newcommand{\e}{\mbf{\varepsilon}}
\newcommand{\ep}[0]{\mbf{\varepsilon}^p}
\newcommand{\epd}[0]{\dot{\mbf{\varepsilon}}^p}
\newcommand{\sig}{\mbf{\sigma}}
\newcommand{\sigs}{\sigma}%scalar
\newcommand{\kap}{\mbf{\kappa}}

\newcommand{\vsigrate}{\dot {\mbf{\sigma}}}
\newcommand{\sigrate}{\dot {\sigma}}
\newcommand{\taurate}{\dot {\tau}}
\newcommand{\erate}  {\dot {\mbf{e}}}

\newcommand{\rest}[1]{\Re\left( {#1} \right)}
\newcommand{\refeq}[1]{Eq.~(\ref{#1})}
\newcommand{\reffig}[1]{Fig.~(\ref{#1})}
\newcommand{\refeqs}[2]{Eqs.~(\ref{#1}), (\ref{#2})}
\newcommand{\refeqsr}[2]{\mbox{Eqs.~(\ref{#1})-(\ref{#2})}}

\newcommand{\C}{$^{\circ}\mathrm{C}$}
\newcommand{\ymu}{y_{\mu}}
\newcommand{\y}[1]{y_{#1}}
\newcommand{\ymui}[1]{y_{\mu_{#1}}}
\newcommand{\tdymu}{{\dot y}_{\mu}}
\newcommand{\ttdymu}{{\ddot y}_{\mu}}
\newcommand{\timeder}[1]{\dot {#1}} 
\newcommand{\dprime}{\prime\prime}

\newcommand{\beq}{\begin{equation}}
\newcommand{\eeq}{\end{equation}}
\newcommand{\bea}{\begin{eqnarray}}
\newcommand{\eea}{\end{eqnarray}}
\newcommand{\vsi}{\mbf{\sigma}}
\newcommand{\vep}{\mbf{\varepsilon}}
\newcommand{\eps}{\varepsilon}
\newcommand{\mD}{\mbf{D}}
\newcommand{\vxi}{\mbf{\xi}}
\newcommand{\vx}{\mbf{x}}
\newcommand{\dxi}{\;\mbox{d}\mbf{\xi}}
\newcommand{\vf}{\mbf{f}}
\newcommand{\vg}{\mbf{g}}
\newcommand{\veps}{\mbf{\varepsilon}}
\newcommand{\mB}{\mbf{B}}
\newcommand{\vsig}{\mbf{\sigma}}
\newcommand{\vd}{\mbf{d}}
\newcommand{\mK}{\mbf{K}}
\newcommand{\macbra}[1]{\langle{#1}\rangle}
\newcommand{\vbs}{\mbf{b}^{\sigma}}
\newcommand{\vbe}{\mbf{b}^{\eta}}
\newcommand{\vbeT}{\mbf{b}^{\eta T}}

\newcommand{\ud}{\mathrm{d}}
\newcommand{\grad}{\nabla}
%position vectors
\newcommand{\x}{\mbf{x}}
\newcommand{\xd}{\mbf{x}^\varphi}
%displacement
\newcommand{\du}{\mbf{u}} 
\newcommand{\bestresultcolor}{blue}
\newcommand{\bestresult}[1]{\textcolor{\bestresultcolor}{\bf{#1}}}
\newcommand{\ignore}[1]{}





\newcommand{\oofem}{\htmladdnormallink{OOFEM}{http://www.oofem.org}\ }
\newcommand{\oofemlnk}[1]{\htmladdnormallink{#1}{http://www.oofem.org}\ }
\newcommand{\bp}{\htmladdnormallink{Bo\v{r}ek Patz\'{a}k}{http://mech.fsv.cvut.cz/~bp/bp.html}}

